.sk {
    position: absolute;
    border-left: 1px solid #c81523;
    left:190px;
    top:10px;
    padding: 3px 0 0 14px;
}
.sk img {
    width:50px;
    height:50px;
}
.sk_list,.sk_con {
    float: left;
}
.nav {
    overflow: hidden;
}
.sk_list ul li,.sk_con ul li {
    float: left;
}
.sk_list ul li a {
    display: block;
    line-height: 47px;
    padding: 0 20px;
    font-size: 16px;
    font-weight: 700px;
    color: #000;  
}
.sk_con ul li a {
    display: block;
    line-height: 49px;
    padding: 0 30px;
    font-size: 14px;
}
.sk_con ul  li :last-child a ::after {
    content: ">";
}
  .sk_hd img {
      width:1160px;
  }
  .sk_bd ul li {
      float: left;
      width:290px;
      height: 460px;
      overflow: hidden;
       
  }
  .sk_bd ul li:nth-child(4n){
      margin-right: 13px;
  }
  .sk_bd ul li img {
    width:290px;
    height: 460px;
  }
  .sk_bd ul li :hover {
      border: 1px solid #c81523;
  }